77485525 has 12 divisors (see below), whose sum is σ = 103473412. Its totient is φ = 57219840.

The previous prime is 77485493. The next prime is 77485537. The reversal of 77485525 is 52558477.

It can be written as a sum of positive squares in 6 ways, for example, as 1062961 + 76422564 = 1031^2 + 8742^2 .

It is not a de Polignac number, because 77485525 - 2⁵ = 77485493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118884 + ... + 119533.

Almost surely, 2^77485525 is an apocalyptic number.

It is an amenable number.

77485525 is a deficient number, since it is larger than the sum of its proper divisors (25987887).

77485525 is a wasteful number, since it uses less digits than its factorization.

77485525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238440 (or 238435 counting only the distinct ones).

The product of its digits is 392000, while the sum is 43.

The square root of 77485525 is about 8802.5862676829. The cubic root of 77485525 is about 426.3244037264.

The spelling of 77485525 in words is "seventy-seven million, four hundred eighty-five thousand, five hundred twenty-five".